Grow dev page simply passes GFP_NOFS to find_or_create_page. This means the allocation of radix tree nodes is done with GFP_NOFS and the allocation of a new page is done using GFP_NOFS. The mapping has a flags field that contains the necessary allocation flags for the page cache allocation. These need to be consulted in order to get DMA and HIGHMEM allocations etc right. So fix grow_dev_page to do the same as __page_symlink calls. Retrieve the mask from the mapping and then remove __GFP_FS. [mm has other changes to this code. Will post a different patch when diffing against mm] Signed-off-by: Christoph Lameter --- fs/buffer.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) Index: linux-2.6.21-rc7/fs/buffer.c =================================================================== --- linux-2.6.21-rc7.orig/fs/buffer.c 2007-04-23 15:29:18.000000000 -0700 +++ linux-2.6.21-rc7/fs/buffer.c 2007-04-23 15:29:43.000000000 -0700 @@ -988,7 +988,8 @@ grow_dev_page(struct block_device *bdev, struct page *page; struct buffer_head *bh; - page = find_or_create_page(inode->i_mapping, index, GFP_NOFS); + page = find_or_create_page(inode->i_mapping, index, + mapping_gfp_mask(inode->i_mapping) & ~__GFP_FS); if (!page) return NULL; -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/